Veritas-bu

Re: [Veritas-bu] slow performance on 10Gbe

2010-04-21 11:08:49
Subject: Re: [Veritas-bu] slow performance on 10Gbe
From: Jeff Cleverley <jeff.cleverley AT avagotech DOT com>
To: WALLEBROEK Bart <Bart.WALLEBROEK AT swift DOT com>
Date: Wed, 21 Apr 2010 09:08:33 -0600
Bart,

I'm not a Solaris guy so I cannot specifically address a specific fix,
but I would look at the hardware network settings on your Solaris
boxes.  We had a problem with some HPUX systems with a particular
switch where they would not auto-negotiate correctly.  We ended up
going into the bios on the systems and setting them to the 100/full
duplex mode and then they ran fine.  You may find your systems are set
to some level of AUTO and that doesn't work well with switch.

There is generally a way to have the OS report what speed or
connection the box is running at.  This may confirm if the systems and
the switch are having trouble negotiating a speed.

HTH.

Jeff

On Wed, Apr 21, 2010 at 12:34 AM, WALLEBROEK Bart
<Bart.WALLEBROEK AT swift DOT com> wrote:
> We have a Windows Media server that has both a 1Gb and a 10Gb connection 
> (only 1 however is enabled at a time).
> When running on the 1Gbe interface the backup speeds are normal.  All clients 
> backup at speeds from 40 - 80 MB/sec.
> When however disabling the 1Gbe and enabling the 10Gbe interface (same IP 
> settings) all Solaris clients backup at speeds of 40-50 KB/sec, while Windows 
> and HP_UX clients still backup at the previous mentioned speed (40-80 MB/sec).
>
> Has anybody any idea ?  The 1Gbe interface goes to a different switch then 
> the 10Gbe fiber cable.
>
>
> Best Regards,
> Bart WALLEBROEK
> Backup Admin & Systems & Applications Management & Support Specialist
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>



-- 
Jeff Cleverley
Unix Systems Administrator
4380 Ziegler Road
Fort Collins, Colorado 80525
970-288-4611
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